views: disable ink drops altogether on Mac

ui/views/animation/ink_drop_host_view.cc

Index: ui/views/animation/ink_drop_host_view.cc
diff --git a/ui/views/animation/ink_drop_host_view.cc b/ui/views/animation/ink_drop_host_view.cc
index 5cdaedba6c9c7737aa1ffcf71cddc474326a5dcf..f204e80b9d6cac022a25a1a6f7825eb2c0f1e810 100644
--- a/ui/views/animation/ink_drop_host_view.cc
+++ b/ui/views/animation/ink_drop_host_view.cc
@@ -15,6 +15,7 @@
 #include "ui/views/animation/ink_drop_mask.h"
 #include "ui/views/animation/ink_drop_stub.h"
 #include "ui/views/animation/square_ink_drop_ripple.h"
+#include "ui/views/style/platform_style.h"
 
 namespace views {
 namespace {
@@ -202,6 +203,10 @@ gfx::Point InkDropHostView::GetInkDropCenterBasedOnLastEvent() const {
 
 void InkDropHostView::AnimateInkDrop(InkDropState state,
                                      const ui::LocatedEvent* event) {
+  // On Mac, ink drops are never used: https://crbug.com/701888
+  if (!PlatformStyle::kUseRipples)
+    return;
+
 #if defined(OS_WIN)
   // On Windows, don't initiate ink-drops for touch/gesture events.
   // Additionally, certain event states should dismiss existing ink-drop